// Copyright 2023 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package taskexecutor

import (
	"context"

	"github.com/pingcap/tidb/pkg/disttask/framework/proto"
)

var factoryFns = make(map[proto.TaskType]FactoryFn)

// FactoryFn is a function to create a TaskExecutor.
type FactoryFn func(ctx context.Context, task *proto.Task, param Param) TaskExecutor

// RegisterTaskType registers the task type.
func RegisterTaskType(taskType proto.TaskType, factory FactoryFn) {
	factoryFns[taskType] = factory
}

// GetTaskExecutorFactory gets taskExecutorFactory by task type.
func GetTaskExecutorFactory(taskType proto.TaskType) FactoryFn {
	return factoryFns[taskType]
}

// ClearTaskExecutors is only used in test
func ClearTaskExecutors() {
	factoryFns = make(map[proto.TaskType]FactoryFn)
}
